Pile fabric loom



March 30, 1937. A, M, MULDOQN I 2,075,402

PILE FABRIC LOOM Filed Sept 26, 1933 Ji -J;

Patented Mar. 30, 1937 UNITED. STATES PATENT OFFICE- PILE FABRIC LOOMAnthony M. Muldoon, Hightstown, N. J.

Application September 26, 1933, Serial No. 690,978

2 Claims.

This invention relates generally to looms for weaving tufted pilefabrics and more particularly to such looms for weaving the patternthrough to the back of the fabric.

In the weaving of such fabrics, the pile bights have no warp threadsbeneath them and the comb in moving out of the fabric has a tendency topull out or loosen the bights.

One object is to provide mechanism for producing a uniform and closewoven rug.

A special object of this invention is to prevent the tuft bights frombeing pulled out or loosened by the comb.

Another object is to more securely position the tuft bights in thefabric.

I accomplish these and other objects by providing a gripper bar that iscarried by the comb of the loom and is automatically moved into positionbelow the row of bights and moved into direct engagement with the bightsby a snap action, this not only preventing the bights from coming out ofthe fabric but actually driving them into the fabric.

The invention will be understood from the following description thereoftaken in connection with the accompanying drawing in which- Fig. 1 is aside view and section of a part of a loom frame and comb mechanismhaving my improvements embodied therein.

Fig. 2 is a detail of the improved bar.

Fig. 3 is a. detail of the comb.

Fig. 4 is a sectional view of the comb and improved bar.

Fig. 5 is a detail view showing the position of 35 the comb and improvedbar relative to the tuft bight as the comb is being withdrawn.

Fig. 6 is a side view of a comb carrier and comb embodying a modifiedform of my invention.

The general construction and operation is that of the conventionalAxminster type of loom, in which there is a breast plate 8 above whichthe complete fabric travels. The tuft threads 9 are supplied and cut offin the usual manner. The comb I0 is supported by the carrier ll whoseends are secured to arms l2 which are hinged at I3 to the upper ends oflevers I4 pivoted at l 5 and actuated in the usual manner so as toproduce the horizontal component of movement of the comb.

The vertical component of the comb movement is furnished by the lifterrod l6 which is hinged at H to the carrier and actuated by a lever [Band the usual cam action (not shown).

. The plate I9 is mounted on the face of the 55 comb l0 and has avertical sliding movement on it produced by a spring 20 in the usualmanner to bend horizontally the ends of the pile tufts which have beeninserted between the warp threads.

The reeds serve to keep the warps separated and beat up the tufts in theusual manner.

It will be understood that the ends of the pile threads are turnedupwardly to the position shown in Fig. 5 by the action of the comb teethin the usual manner.

In the making of fabrics in which the pattern is made visible at theback the pile bights are left unsupported in the usual weaving action sothat there is a tendency for the comb teeth to drag the loose ends ofthe pile threads downward and thus loosen the bights. In order toprevent this loosening action and for the additional purpose of beatingthe tufts more tightly into the fabric I provide a bar or plate 26 whichis mounted in the carrier l I in-a groove behind the comb II]. This baris urged upwardly by springs 21 and the vertical movement of the gripperbar 26 with which engage beneath the edge of the breast a plate 8. Whenthe comb has completed the bending of the pile tufts the gripper bar isreleased from the breast plate 8 and comes up against the bottoms of thepile bights and holds them in positlon while the comb teeth are beingretracted.

The next shot of weft is then thrown and beaten into position by thereeds 25. By properly adjusting the timing of the comb and gripper bar,the gripper bar can be made to hold the bights while the pile threadsare cut olf by the knives. The plate l9 coacts with the comb to bendover the inserted tufts. This plate l9 also keeps the face of the combclean.

In Fig. 6 I have shown a modified form of construction in which thegripper plate is mounted on the rear face of the carrier II but theaction is the same as that above described.

It should be understood that this invention is applicable to theproduction of pile fabrics of various weaves in which the pile bightsare exposed at the lower face of the fabric.

I claim:

1. In a loom for weaving tufted pile fabrics, a movable reed, a movablecomb carrier, a comb plate mounted thereon, mechanism for moving thecarrier, a bar on the carrier for preventing the comb from pulling outthe tuft bights and for beating up the tuft bights into the fabric andmovable relative to the comb, a stationary breast plate for supportingthe fabric, cam faced lugs on the bar adapted to engage the edge of thebreast plate, said reed being adapted to engage the comb and move thelugs against the breast plate whereby the bar is moved to inoperativeposition below the breast plate, and spring means for moving the bar tooperative position.

2. In a loom for weaving tufted pile fabrics, a movable reed, a movablecomb carrier, a comb plate mounted thereon, mechanism for moving thecarrier, a bar on the carrier for preventing the comb from pulling outthe tuft bights and for beating up the tuft bights into the fabric andmovable relative to the comb, a stationary breast plate for supportingthe fabric, cam faced lugs on the bar adapted to engage the edge of thebreast plate, said reed being adapted to engage the comb and move thelugs against the breast plate whereby the bar is moved to inoperativeposition below the breast plate, spring means for moving the bar tooperative position and a pin and slot connection between the comb plateand bar for limiting the upward movement of the bar.

ANTHONY M. MULDOON.

